WO2009046228A1 - Amplification d'un signal multibande multiplexé - Google Patents

Amplification d'un signal multibande multiplexé Download PDF

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Publication number
WO2009046228A1
WO2009046228A1 PCT/US2008/078637 US2008078637W WO2009046228A1 WO 2009046228 A1 WO2009046228 A1 WO 2009046228A1 US 2008078637 W US2008078637 W US 2008078637W WO 2009046228 A1 WO2009046228 A1 WO 2009046228A1
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WO
WIPO (PCT)
Prior art keywords
signal
band
circuit
diplexer
amplifier
Prior art date
Application number
PCT/US2008/078637
Other languages
English (en)
Inventor
Timothy R. Geis
Original Assignee
Intelligent Wireless Products, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intelligent Wireless Products, Inc. filed Critical Intelligent Wireless Products, Inc.
Publication of WO2009046228A1 publication Critical patent/WO2009046228A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/111—Indexing scheme relating to amplifiers the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/165—A filter circuit coupled to the input of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/171—A filter circuit coupled to the output of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier

Definitions

  • the present invention is generally directed to the area of signal amplification, and particularly, but not exclusively, to signal amplification in wireless communication systems.
  • Signal amplification is often employed to increase the gain, power, signal-to-noise ratio, and/or the like, of a signal.
  • a multi-band signal may be employed to transmit data for one or more applications. For example, multiple frequency bands (e.g., bands in the 800 MHz, 1800MHz, and 1900 MHz range) are allocated for mobile telephony.
  • mobile telephones and mobile telephone systems may include multi-band functionality and multi-band signal amplifiers.
  • multiple data streams may also be modulated into a single multi- band signal.
  • DSL digital-subscriber-line
  • AM/FM radio receivers receive amplitude modulated radio signals from one frequency band and receive frequency modulated radio signals from another frequency band.
  • FIGURE 1 is a block diagram of an embodiment of a unidirectional circuit according to aspects of the present invention.
  • FIGURE 2 is a block diagram of another embodiment of a bidirectional circuit according to aspects of the present invention.
  • 3366213 1 9609309-000 Docket No.: 2207746-WOO exclusive and is equivalent to the term "based, at least in part on,” and includes being based on additional factors, some of which are not described herein.
  • the term “coupled” means at least either a direct electrical connection between the items connected, or an indirect connection through one or more passive or active intermediary devices.
  • the term “circuit” means at least either a single component or a multiplicity of components, either active and/or passive, that are coupled together to provide a desired function or functions.
  • signal means at least one current, voltage, electromagnetic, optical, charge, temperature, data, or other signal and may include one or more data stream(s).
  • band means a range of frequencies in the electromagnetic spectrum. A band may be in the radio frequency spectrum, microwave frequency spectrum, infrared spectrum, visible light spectrum, X-ray spectrum, gamma ray spectrum, and/or the like.
  • signal component means a portion of a signal which includes a data stream. A signal component may be part of a multi-band or signal-band signal.
  • multi-band signal means a signal that is employed to communicate signal components from more than one band. A multi-band signal may include signal components from two bands, three bands, and/or more bands.
  • single-band signal means a signal that is employed to communicate signal components from less bands than the multi-band signal from which it is derived, or into which it is combined.
  • signal path means the path through which a data stream travels. A signal path may travel through active or passive elements, along a signal, as a signal component along a signal, and/or the like. A “signal” may be used to communicate using frequency modulation, amplitude modulation, phase modulation, active high, active low, time multiplexed, synchronous, asynchronous, differential, single-ended, or any other analog or digital signaling or modulation techniques.
  • the phrase “in one embodiment,” as used herein does not necessarily refer to the same embodiment, although it may.
  • the invention includes an apparatus and a method of amplifying a multi-band signal.
  • Embodiments of this invention include apparatuses and methods of sharing amplification circuitry in multi-band systems.
  • An embodiment of an apparatus includes multiplexer circuits, an amplifier circuit, and filter circuits.
  • One diplexer circuit is arranged to split a multi-band input signal into multiple single-band signals for separate filtration.
  • Another diplexer is arranged to combine the multiple filtered single-band signals into a single multi-band signal for combined amplification.
  • Multi-band amplification is generally counter-intuitive, because combining bands generally increases the voltage, which
  • 3366213 1 9609309-000 Docket No.: 2207746-WOO may cause the combined signal to swing into the non-linear range.
  • embodiments of the present invention produce a combined signal to remain within the dynamic range of an amplifier.
  • a third diplexer circuit is arranged to split the amplified multi-band signal into multiple single -band output signals.
  • separate or combined gain control circuits may be included.
  • Multiple amplification circuits, filtration circuits, and gain control circuits may be included in an apparatus embodiment, which may be applied to signals for unidirectional and/or bidirectional communication.
  • One example embodiment amplifies multiple bands for wireless communication.
  • FIGURE 1 is a block diagram of an embodiment of a unidirectional circuit 100, according to aspects of the present invention.
  • Circuit 100 is a signal amplifier that is arranged to amplify multi-band input signal IN, and to provide single-band output signals OUTA and OUTB.
  • multi-band input signal IN includes signal components from two bands (BANDA and BANDB).
  • BANDA may correspond to a cellular band signal component (800MHz), sometimes referred to as advanced mobile phone system (AMPS) band.
  • BANDB may correspond to Personal Communications Services (PCS) band signal components (1800/1900 MHz).
  • PCS Personal Communications Services
  • BANDA and BANDB signal paths employ shared circuitry.
  • this shared circuitry may reduce the size, power consumption, complexity, and/or the like, of circuit 100.
  • the BANDA and BANDB signal components may be in any frequency band of the electromagnetic spectrum. For example, they may be in the RF spectrum, microwave spectrum, audible spectrum, and/or the like.
  • diplexer DIPLl is arranged to receive multi-band input signal IN. As output, DIPLl provides the BANDA signal component of signal IN to filter FLTR A l via signal SlA, and provides the BANDB signal component of signal IN to filter FLTR B l via signal SlB.
  • Diplexer DIPLl may be any multiplexor circuit that is suitable for splitting input signal IN into its constituent BANDA and BANDB signal components.
  • a multiplexor circuit may include a high-pass filter and a low-pass filter; two or more band-pass filters; and/or the like.
  • filter FLTR A l may include a surface acoustic wave (SAW) filter.
  • SAW surface acoustic wave
  • other filters may be employed.
  • passive filters, active filters, analog filters, digital filters, and/or the like may be suitably employed. These filters may include crystal filters, bulk acoustic wave filters, high-pass filters, low-pass filters, band-bass filters, RC filters, LC filters, RLC filters, and/or the like.
  • Diplexer DIPL2 may be any multiplexor circuit that is suitable to combine two input signals into a signal output signal.
  • amplifier AMPl may be a radio frequency (RF) amplifier, an operational amplifier circuit, a signal amplifier circuit, and/or the like.
  • RF radio frequency
  • amplifier AMPl is selected such that it has a relatively large dynamic range and is capable of amplifying both the BANDA and BANDB signal components of signal S3 without substantial clipping or saturation.
  • Amplifier AMPl may also receive a static, or dynamically determined gain control signal, to control amplification of signal S3.
  • signal S4 is split by diplexer DIPL3.
  • Diplexer provides the BANDA signal component of signal S4 on signal S5 A to filter FLTR A 2 and provides the BANDB signal component of signal S4 on signal S5A to filter FLTR B 2.
  • Filters FLTR A 2 and FLTR B 2 are respectively arranged to provide output signals OUTA and OUTB.
  • FIGURE 1 illustrates circuitry for amplifying a dual-band signal
  • other embodiments may include additional circuitry for amplifying multi-band input signal having signal components from three or more bands. These variations are within the spirit and scope of the invention.
  • diplexers DIPL1-DIPL3, filters FLTR A l, FLTR A 2, FLTR B l, FLTR B 2, and amplifier AMPl are embodied on a monolithic integrated circuit. In another embodiment, they are discrete components mounted on one or more circuit boards.
  • the circuit board(s) may be FR4, Polymide, PTFE, Phenolic, and/or the like,
  • 3366213 1 9609309-000 Docket No.: 2207746-WOO and may be of laminate or non-laminate construction, and may have any number of layers.
  • components are mounted on a flexible circuit board made of Pyralux, RigidFlex, and/or the like.
  • the boards may be connected by ribbon cables, thru-board connectors, board-edge connector, and/or the like.
  • multiple circuit boards, flexible circuits, and/or connectors may be stacked, coupled at angles or otherwise configured to reduce overall size, to fit into another assembly, to fit around existing parts, and/or to otherwise integrate into a desired packaging arrangement.
  • One such embodiment may be a small integrated package in a vehicle.
  • FIGURE 2 is a block diagram of an embodiment of a bidirectional circuit 200, according to aspects of the present invention.
  • circuit 200 is arranged to provide signal amplification in a wireless bi-directional communication system such as a mobile telephone system.
  • circuit 200 may be employed as a signal amplifier for increasing the gain of cellular band signal components (800MHz) and Personal Communications Services (PCS) band signal components (1800/1900 MHz) in a multi-band signal.
  • cellular band signal components 800MHz
  • PCS Personal Communications Services
  • Signal components in these bands may include a Global System for Mobile communication (GSM) data stream(s), General Packet Radio Services (GPRS) data stream(s), Enhanced Data GSM Environment (EDGE) data stream(s), Wideband Code Division Multiple Access (WCDMA) data stream(s), Universal Mobile Telephone System (UMTS) data stream(s), and/or the like.
  • GSM Global System for Mobile communication
  • GPRS General Packet Radio Services
  • EDGE Enhanced Data GSM Environment
  • WCDMA Wideband Code Division Multiple Access
  • UMTS Universal Mobile Telephone System
  • circuit 200 may also be employed as a wireless-to-wireless signal amplifier.
  • circuit 200 may be employed to amplify a wireless signal that includes data stream such as an EDGE data stream.
  • This EDGE data stream may, for example, be employed to enable communications between a local area network, such as an IEEE 802.11 network, and a wide area network, such as the Internet.
  • other embodiments of circuit 200 may be arranged to amplify virtually any multi
  • circuit 200 is arranged to amplify four signal components.
  • these signal components may include:
  • the BANDA uplink and BANDB uplink share amplification circuitry.
  • the BANDA downlink and the BANDB downlink also share amplification circuitry.
  • the BANDA and BANDB signal components of signal UP are first split by diplexer DIPLl onto separate signals.
  • diplexer DIPLl output signals are bidirectional and include both uplink and downlink signal components.
  • BANDA uplink duplexer DUPLl then separates the BANDA downlink and uplink signals components onto separate signals.
  • Duplexer DUPLl may be any multiplexor circuit that is suitable for separating the BANDA downlink and uplink signals components.
  • duplexer DUPLl may include a high-pass filter and a low-pass filter; two or more band-pass filters; and/or the like.
  • the BANDA uplink signal then goes to attenuator ATNl which selectively controls the signal strength to the following stages based, at least in part, on a signal strength detected by sensor SNSl.
  • the gain provided by circuit 200 is as described in a U.S. Patent Application to T. Geis, et al, with attorney docket number 21165/0207891 -USO, and entitled "Wireless to Wireless Signal Amplification With Gain Optimization and Oscillation Prevention," the entire contents of which are hereby incorporated by reference.
  • filter FLl includes a first 2 dB PAD, a SAW filter, and a second 2 dB PAD.
  • the SAW filter may be used to define a pass-band for the signal, and the PADs may be employed for providing relatively low attenuation impedance matching.
  • other filters such as those discussed above, may be employed.
  • the BANDB uplink signal goes through similar signal path, including duplexer DUPL2, attenuator ATN2, and filter FL2.
  • the BANDB uplink signal path may be different from the BANDA uplink signal path.
  • the BANDA and BANDB uplink signal paths are then combined by diplexer DIPL2.
  • the BANDA and BANDB uplink signal components are provided as a signal multi-band signal to amplifier AMPl .
  • amplifier AMPl is
  • amplifier AMPl is a LEE-59 amplifier, available from Mini-Circuits, Inc of Brooklyn, New York. However, other amplifiers, such as other RF amplifiers, operational amplifier circuits, power amplifiers, and/or the like, may also be suitably employed.
  • the output of amplifier AMPl is then split by diplexer DIPL3 such that the BANDA signal component is provided to filter FL3, and the BANDB signal component is provided to filter FL4.
  • combination attenuator amplifier ATN3 is arranged to selectively provide amplification or attenuation of approximately -25 dB to +25 dB based, at least in part, on a signal strength detected by sensor SNSl.
  • the BANDB signal components go through attenuator ATN4.
  • the level of attenuation provided by attenuator ATN4 is based, at least in part, on a signal strength detected by sensor SNS2.
  • the signal components After each of the attenuators, the signal components, for example, pass through another PAD-Filter-PAD combination (FL5 for BANDA and FL6 for BANDB). These signal components are then combined in diplexer DIPL4 and then amplified by amplifier AMP2.
  • amplifier AMP2 In one embodiment, amplifier AMP2 is arranged to provide approximately 20 dB of gain.
  • the signal components are then again split by diplexer DIPL5 and they, for example, pass through another set of PAD Filter PAD filters.
  • the signal components are then combined in diplexer DIPL6 and amplified by amplifier AMP3.
  • amplifier AMP3 is arranged to provide a gain of approximately 20 dB.
  • the signal is then split by diplexer DIPL7 and the BANDA signal component is provided to filter FL9 and power amplifier AMP4.
  • power amplifier AMP4 provides approximately 23 dB of gain and is a CX65105 available from Skyworks Solutions, Inc of Worburn, Massachusetts.
  • An RF output level of power amplifier AMP4 is sensed by sensor SNS 1.
  • a DC voltage is provided by sensor SNSl based, at least in part, on the sensed RF output level of power amplifier AMP4. Any suitable circuits, methods, and/or the like, may be employed to provide attenuation control signals based on the output of sensor SNS 1.
  • the BANDA uplink signal component is then provided to BANDA duplexer DUPL3 where it is combined with the BANDA downlink signal component.
  • the BANDB uplink signal component leaves diplexer DIPL7 is filtered by filter FLlO and amplified by BANDB uplink power amplifier AMP5.
  • power amplifier AMP5 provides a gain of approximately 28 dB.
  • sensor SNS2 monitors the output level of the BANDB uplink signal component.
  • a DC voltage is provided by sensor SNS2 based, at least in part, on the sensed RF output level of power amplifier AMP5. Any suitable circuits, methods, and/or the like, may be employed to provide attenuation control signals based on the output of sensor SNS2.
  • the BANDB uplink signal component is then provided to BANDB duplexer DUPL4 where it is combined with the BANDB downlink signal component.
  • Input/output 102 may be an antenna, connector, coupled to another amplifier circuit, and/or the like.
  • the BANDA and BANDB signal components of signal DOWN are first split by diplexer DIPL8 onto separate signals.
  • the diplexer DIPL8 output signals are bidirectional and include both uplink and downlink signal components.
  • BANDA downlink duplexer DUPL3 then separates the BANDA downlink and uplink signals components onto separate signals.
  • the BANDA downlink signal is then amplified by amplifier AMP6 and filtered by filter FLl 1.
  • amplifier AMP6 is a low-noise preamplifier circuit that is arranged to provide approximately 20 dB of gain.
  • the BANDA downlink signal then goes to attenuator ATN5 which selectively controls the signal strength to the following stages based, at least in part, on a signal strength detected by sensor SNS3. From attenuator ATN5 the signal goes to filter FL13.
  • filter FL13 includes a first 2 dB PAD, a SAW filter, and a second 2 dB PAD. In other embodiments, other filters, such as those discussed above, may be employed as filter FL13.
  • the BANDB downlink signal goes through a similar signal path, including duplexer DUPL4, amplifier AMP7, filter FL12, attenuator ATN6, and filter
  • amplifier AMP7 is a low-noise preamplifier circuit that is arranged to provide approximately 20 dB of gain and attenuator ATN7 is arranged to selectively control the signal strength to the following stages based, at least in part, on a signal strength detected by sensor SNS4.
  • the BANDB downlink signal path may be different from the BANDA downlink signal path.
  • the uplink signal paths may be the same as the downlink signal paths.
  • the BANDA and BANDB downlink signal paths are then combined by diplexer DIPL9.
  • the BANDA and BANDB downlink signal components are provided as a signal multi-band signal to amplifier AMP8.
  • amplifier AMP8 is arranged to amplify the signal by approximately 20 dB.
  • Amplifiers such as those discussed above, may be suitably employed as amplifier AMP8.
  • the output of amplifier AMP8 is split by diplexer DIPLlO such that the BANDA signal component is provided to filter FLl 5, and the BANDB signal component is provided to filter FL 16 prior to being recombined by diplexer DIPLl 1.
  • the multi-band output signal from diplexer DIPL 11 is then amplified approximately 20 dB by amplifier AMP9.
  • Attenuator ATN7 is a combination amplifier/attenuator which provides signal gain or attenuation based, at least in part, on the output of sensor SNS3. Also, attenuator ATN8 provides attenuation based, at least in part, on the output of sensor SNS4.
  • Attenuators ATN7 and ATN8 are respectively provided to filters FL 17 and FL 18 before being combined by diplexer DIPL13.
  • amplifier AMPlO is arranged to provide amplification of approximately 2OdB.
  • the output of amplifier AMPlO is split by diplexer DIPL 14 for filtering.
  • the BANDA signal component is filtered by filter FL 19 and amplified by the BANDA downlink power amplifier AMPl 1.
  • An RF output level of power amplifier AMPl 1 is sensed by sensor SNS3.
  • a DC voltage is provided by sensor SNS3 based, at least in part,
  • 3366213 1 9609309-000 Docket No.: 2207746-WOO on the sensed RF output level of power amplifier AMPl 1.
  • Any suitable circuits, methods, and/or the like, may be employed to provide attenuation control signals based on the output of sensor SNS3.
  • the BANDA downlink signal component is then provided to BANDA duplexer DUPLl where it is combined with the BANDA uplink signal component.
  • the BANDB signal component is filtered by filter FL20 and amplified by the BANDB downlink power amplifier AMP 12.
  • An RF output level of power amplifier AMP 12 is sensed by sensor SNS4.
  • a DC voltage is provided by sensor SNS4 based, at least in part, on the sensed RF output level of power amplifier AMP 12.
  • Any suitable circuits, methods, and/or the like, may be employed to provide attenuation control signals based on the output of sensor SNS4.
  • the BANDB downlink signal component is then provided to BANDB duplexer DUPL2 where it is combined with the BANDB uplink signal component.
  • Input/output IOl may be an antenna, connector, coupled to another amplifier circuit, and/or the like.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Amplifiers (AREA)

Abstract

La présente invention concerne un appareil et un procédé d'amplification d'un signal multibande. L'appareil comprend des circuits de diplexeur, un circuit d'amplificateur et des circuits de filtre. Un circuit de diplexeur est conçu pour diviser un signal d'entrée multibande en plusieurs signaux monobande pour effectuer leur filtrage séparé. Un autre diplexeur est conçu pour combiner les multiples signaux monobande filtrés sous forme d'un signal multibande unique pour effectuer l'amplification combinée. Un troisième circuit de diplexeur est conçu pour diviser le signal multibande amplifié sous forme de multiples signaux de sortie monobande. Des circuits de commande du gain combinés ou séparés peuvent également être utilisés. Plusieurs circuits d'amplification, plusieurs circuits de filtrage et plusieurs circuits de commande du gain peuvent être inclus dans un appareil, pour une éventuelle application à des signaux destinés à la communication unidirectionnelle et/ou bidirectionnelle.
PCT/US2008/078637 2007-10-02 2008-10-02 Amplification d'un signal multibande multiplexé WO2009046228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US97705807P 2007-10-02 2007-10-02
US60/977,058 2007-10-02

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WO2014060044A1 (fr) * 2012-10-19 2014-04-24 Telefonaktiebolaget L M Ericsson (Publ) Appareil et procédé pour moduler en charge un amplificateur
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Cited By (16)

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US9014159B2 (en) 2010-01-14 2015-04-21 Airbus Operations Gmbh Device for providing radiofrequency signal connections
WO2011086160A1 (fr) * 2010-01-14 2011-07-21 Airbus Operations Gmbh Dispositif permettant d'obtenir des liaisons par signaux de radiofréquence dans un avion
WO2014060044A1 (fr) * 2012-10-19 2014-04-24 Telefonaktiebolaget L M Ericsson (Publ) Appareil et procédé pour moduler en charge un amplificateur
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GB2572882B (en) * 2014-10-31 2020-01-08 Skyworks Solutions Inc A receiving system
GB2572882A (en) * 2014-10-31 2019-10-16 Skyworks Solutions Inc Diversity receiver front end system with phase-shifting components
US10424822B2 (en) 2015-10-14 2019-09-24 Wilson Electronics, Llc Multi-common port multiband filters
US10847856B2 (en) 2015-10-14 2020-11-24 Wilson Electronics, Llc Multi-common port multiband filters
US11012143B2 (en) 2016-11-15 2021-05-18 Wilson Electronics, Llc Desktop signal booster
US10992371B2 (en) 2016-11-15 2021-04-27 Wilson Electronics, Llc Desktop signal booster
WO2018144945A1 (fr) * 2017-02-02 2018-08-09 Wilson Electronics, Llc Amplificateur de signaux avec bandes spectralement adjacentes
US10630371B2 (en) 2017-02-02 2020-04-21 Wilson Electronics, Llc Signal booster with spectrally adjacent bands
CN110352570A (zh) * 2017-02-02 2019-10-18 威尔逊电子有限责任公司 具有频谱相邻频带的信号增强器
US10432294B2 (en) 2017-02-02 2019-10-01 Wilson Electronics, Llc Signal booster with spectrally adjacent bands
US10148341B2 (en) 2017-02-02 2018-12-04 Wilson Electronics, Llc Independent band detection for network protection
US10659142B1 (en) 2018-12-04 2020-05-19 Wilson Electronics, Llc Independent band detection for network protection

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